Shear load on bolts 4

[Jack_]

Hi all.
Trying to build my DIY weightlifting rack (bench press & squatting).
The two beams are 60x60 mm (3mm thick) galvanized steel.
The issue is with the hinges. Making a special welded hinge is too expensive.
Thought of using M22 bolts. The Olymic barbell will rest on one M22 bolt on each side, must hold up to 150 kg on each bolt (~300 lbs), about 5 cm from the beam.
Will it hold?

In the image (model): pencil = barbell
Did a test with an 11 mm thick bolt, bended after just 50 kg, and completely at 75 kg (although I placed the load ~9cm from the securing nut).

 

[rb1957]

he does mention M20 bolts (16:16 on the 21st) … he's says M11 now (fat pencil ?).

I assumed his 2nd set of pic was adding a wooden block to support the (same M11?) bolt.

The bolt isn't failing in shear, but bending … so give it bending support. A bigger bolt will help, a block will help a lot more.

another day in paradise, or is paradise one day closer ?

 

[Jack_]

Right, I used a M11 + wooden block, just for testing.
I plan to use a thicker bolt.
Right, only bending damage, no shear.

Machining a groove...a bit hard. I`ll use wood instead

Thank you all guys, I`ll update if I have something interesting to share here